Modern C

Chapter 7. Functions

This chapter covers

• Introduction to simple functions
• Working with main
• Understanding recursion

We have already seen the different means that C offers for conditional execution: execution that, based on a value, chooses one branch of the program over another to continue. The reason for a potential “jump” to another part of the program code (for example, to an else branch) is a runtime decision that depends on runtime data. This chapter starts with a discussion of unconditional ways to transfer control to other parts of our code: by themselves, they do not require any runtime data to decide where to go.

The code examples we have seen so far often used functions from the C library that provided features we did not want ...